Exocarpium Citri Grandis

Ingredient Profile

Modern Research Perspective

Flavonoids and volatile constituents show expectorant, anti-inflammatory, antioxidant, antimicrobial, and airway-relaxing effects in experimental studies. Human evidence is largely limited to small combined-herb investigations for cough or respiratory symptoms, with little direct evidence for the peel alone. Species, maturity, processing, and extract strength vary; clinical efficacy and long-term safety require better trials.

Traditional Function

In traditional Chinese medicine, Exocarpium Citri Grandis is bitter, pungent, and mildly warm. It regulates lung qi, transforms phlegm, relieves cough, and helps chest or upper abdominal fullness associated with phlegm-dampness.